// MSDropDown - jquery.dd.js
// author: Marghoob Suleman
// Date: 12th Aug, 2009
// Version: 2.1 {date: 3rd Sep 2009}
// Revision: 25
// web: www.giftlelo.com | www.marghoobsuleman.com
// MSDropDown - jquery.dd.js
// author: Marghoob Suleman
// Date: 12th Aug, 2009
// Version: 2.1 {date: 3rd Sep 2009}
// Revision: 25
// web: www.giftlelo.com | www.marghoobsuleman.com
/*
 // msDropDown is free jQuery Plugin: you can redistribute it and/or modify
 // it under the terms of the either the MIT License or the Gnu General Public License (GPL) Version 2
 */

(function($) {
  var oldDiv = "";
  $.fn.dd = function(options) {
    //$this = this;
    options = $.extend({
      height:120,
      visibleRows:7,
      rowHeight:23,
      showIcon:true,
      zIndex:9999,
      style:''
    }, options);
    var selectedValue = "";
    var actionSettings = {};
    actionSettings.insideWindow = true;
    actionSettings.keyboardAction = false;
    actionSettings.currentKey = null;
    var ddList = false;
    config = {postElementHolder:'_msddHolder', postID:'_msdd', postTitleID:'_title',postTitleTextID:'_titletext',postChildID:'_child',postAID:'_msa',postOPTAID:'_msopta',postInputID:'_msinput', postArrowID:'_arrow', postInputhidden:'_inp'};
    styles = {dd:'dd', ddTitle:'ddTitle', arrow:'arrow', ddChild:'ddChild', disbaled:.30};
    attributes = {actions:"onfocus,onblur,onchange,onclick,ondblclick,onmousedown,onmouseup,onmouseover,onmousemove,onmouseout,onkeypress,onkeydown,onkeyup", prop:"size,multiple,disabled,tabindex"};
    var elementid = $(this).attr("id");
    var inlineCSS = $(this).attr("style");
    options.style += (inlineCSS == undefined) ? "" : inlineCSS;
    var allOptions = $(this).children();
    ddList = ($(this).attr("size") > 0 || $(this).attr("multiple") == true) ? true : false;
    if (ddList) {
      options.visibleRows = $(this).attr("size");
    }
    var a_array = {};//stores id, html & value etc
    //create wrapper
    createDropDown();

    function getPostID(id) {
      return elementid + config[id];
    }

    function getOptionsProperties(option) {
      var currentOption = option;
      var styles = $(currentOption).attr("style");
      return styles;
    }

    function matchIndex(index) {
      var selectedIndex = $("#" + elementid + " option:selected");
      if (selectedIndex.length > 1) {
        for (var i = 0; i < selectedIndex.length; i++) {
          if (index == selectedIndex[i].index) {
            return true;
          }
        }
      } else {
        if (selectedIndex.length == 1) {
          if (selectedIndex[0].index == index) {
            return true;
          }
        }
      }
      return false;
    }

    function createATags() {
      var childnodes = allOptions;
      var aTag = "";
      var aidfix = getPostID("postAID");
      var aidoptfix = getPostID("postOPTAID");
      childnodes.each(function(current) {
        var currentOption = childnodes[current];
        //OPTGROUP
        if (currentOption.nodeName == "OPTGROUP") {
          aTag += "<div class='opta'>";
          aTag += "<span style='font-weight:bold;font-style:italic; clear:both;'>" + $(currentOption).attr("label") + "</span>";
          var optChild = $(currentOption).children();
          optChild.each(function(currentopt) {
            var currentOptOption = optChild[currentopt];
            var aid = aidoptfix + "_" + (current) + "_" + (currentopt);
            var arrow = $(currentOptOption).attr("title");
            arrow = (arrow.length == 0) ? "" : '<img class="dd ddFlag" src="' + arrow + '" align="left" /> ';
            var sText = $(currentOptOption).text();
            var sValue = $(currentOptOption).val();
            var sEnabledClass = ($(currentOptOption).attr("disabled") === true) ? "disabled" : "enabled";
            a_array[aid] = {html:arrow + sText, value:sValue, text:sText, index:currentOptOption.index, id:aid};
            var innerStyle = getOptionsProperties(currentOptOption);
            if (matchIndex(currentOptOption.index) === true) {
              aTag += '<a href="javascript:void(0);" class="selected ' + sEnabledClass + '"';
            } else {
              aTag += '<a href="javascript:void(0);" class="' + sEnabledClass + '"';
            }
            if (innerStyle != false)
            {
              aTag += ' style="' + innerStyle + '"';
            }
            aTag += ' id="' + aid + '">';
            aTag += arrow + sText + '</a>';
          });
          aTag += "</div>";

        } else {
          var aid = aidfix + "_" + (current);
          var arrow = $(currentOption).attr("title");
          arrow = (arrow.length == 0) ? "" : '<img class="dd ddFlag" src="' + arrow + '" align="left" /> ';
          var sText = $(currentOption).text();
          var sValue = $(currentOption).val();
          var sEnabledClass = ($(currentOption).attr("disabled") == true) ? "disabled" : "enabled";
          a_array[aid] = {html:arrow + sText, value:sValue, text:sText, index:currentOption.index, id:aid};
          var innerStyle = getOptionsProperties(currentOption);
          if (matchIndex(currentOption.index) == true) {
            aTag += '<a href="javascript:void(0);" class="selected ' + sEnabledClass + '"';
          } else {
            aTag += '<a  href="javascript:void(0);" class="' + sEnabledClass + '"';
          }
          if (innerStyle != false)
          {
            aTag += ' style="' + innerStyle + '"';
          }
          aTag += ' id="' + aid + '">';
          aTag += arrow + sText + '</a>';
        }
      });
      return aTag;
    }

    function createChildDiv() {
      var id = getPostID("postID");
      var childid = getPostID("postChildID");
      var sStyle = options.style;
      sDiv = "";
      sDiv += '<div id="' + childid + '" class="' + styles.ddChild + '"';
      if (!ddList) {
        sDiv += (sStyle != "") ? ' style="' + sStyle + '"' : '';
      } else {
        sDiv += (sStyle != "") ? ' style="border-top:1px solid #c3c3c3;display:block;position:relative;' + sStyle + '"' : '';
      }
      sDiv += '>';
      return sDiv;
    }

    function createTitleDiv() {
      var titleid = getPostID("postTitleID");
      var arrowid = getPostID("postArrowID");
      var titletextid = getPostID("postTitleTextID");
      var inputhidden = getPostID("postInputhidden");
      var sText = $("#" + elementid + " option:selected").text();
      var arrow = $("#" + elementid + " option:selected").attr("title");
      arrow = (arrow === undefined || arrow.length == 0 || options.showIcon == false) ? "" : '<img class="dd ddFlag" src="' + arrow + '" align="left" /> ';
      var sDiv = '<div id="' + titleid + '" class="' + styles.ddTitle + '"';
      sDiv += '>';
      sDiv += '<span id="' + arrowid + '" class="' + styles.arrow + '"></span><span class="textTitle" id="' + titletextid + '">' + arrow + sText + '</span></div>';
      return sDiv;
    }

    function createDropDown() {
      var changeInsertionPoint = false;
      var id = getPostID("postID");
      var titleid = getPostID("postTitleID");
      var titletextid = getPostID("postTitleTextID");
      var childid = getPostID("postChildID");
      var arrowid = getPostID("postArrowID");
      var iWidth = $("#" + elementid).width();
      var sStyle = options.style;
      if ($("#" + id).length > 0) {
        $("#" + id).remove();
        changeInsertionPoint = true;
      }
      var sDiv = '<div id="' + id + '" class="' + styles.dd + '"';
      sDiv += (sStyle != "") ? ' style="' + sStyle + '"' : '';
      sDiv += '>';
      //create title bar
      if (!ddList)
      {
        sDiv += createTitleDiv();
      }
      //create child
      sDiv += createChildDiv();
      sDiv += createATags();
      sDiv += "</div>";
      sDiv += "</div>";
      if (changeInsertionPoint == true) {
        var sid = getPostID("postElementHolder");
        $("#" + sid).after(sDiv);
      } else {
        $("#" + elementid).after(sDiv);
      }
      $("#" + id).css("width", iWidth + "px");
      $("#" + childid).css("width", (iWidth - 2) + "px");
      if (allOptions.length > options.visibleRows) {
        var margin = parseInt($("#" + childid + " a:first").css("padding-bottom")) + parseInt($("#" + childid + " a:first").css("padding-top"));
        var iHeight = ((options.rowHeight) * options.visibleRows) - margin;
        $("#" + childid).css("height", iHeight + "px");
      }
      //set out of vision
      if (changeInsertionPoint == false) {
        setOutOfVision();
        addNewEvents(elementid);
      }
      if ($("#" + elementid).attr("disabled") == true) {
        $("#" + id).css("opacity", styles.disbaled);
      } else {
        applyEvents();
        //add events
        //arrow hightlight
        if (!ddList) {
          $("#" + titleid).bind("mouseover", function(event) {
            hightlightArrow(1);
          });
          $("#" + titleid).bind("mouseout", function(event) {
            hightlightArrow(0);
          });
        }
        //open close events
        $("#" + childid + " a.enabled").bind("click", function(event) {
          event.preventDefault();
          manageSelection(this);
          if (!ddList) {
            $("#" + childid).unbind("mouseover");
            setInsideWindow(false);
            var sText = (options.showIcon == false) ? $(this).text() : $(this).html();
            setTitleText(sText);
            closeMe();
          }
          setValue();
          //actionSettings.oldIndex = a_array[$(this).attr("id")].index;
        });
        $("#" + childid + " a.disabled").css("opacity", styles.disbaled);
        if (ddList) {
          $("#" + childid).bind("mouseover", function(event) {
            if (!actionSettings.keyboardAction) {
              actionSettings.keyboardAction = true;
              $(document).bind("keydown", function(event) {
                var keyCode = event.keyCode;
                actionSettings.currentKey = keyCode;
                if (keyCode == 39 || keyCode == 40) {
                  //move to next
                  event.preventDefault();
                  event.stopPropagation();
                  next();
                  setValue();
                }
                if (keyCode == 37 || keyCode == 38) {
                  event.preventDefault();
                  event.stopPropagation();
                  //move to previous
                  previous();
                  setValue();
                }
              });

            }
          });
        }
        $("#" + childid).bind("mouseout", function(event) {
          setInsideWindow(false);
          $(document).unbind("keydown");
          actionSettings.keyboardAction = false;
          actionSettings.currentKey = null;
        });
        if (!ddList) {
          $("#" + titleid).bind("click", function(event) {
            setInsideWindow(false);
            if ($("#" + childid + ":visible").length == 1) {
              $("#" + childid).unbind("mouseover");
            } else {
              $("#" + childid).bind("mouseover", function(event) {setInsideWindow(true);});
              openMe();
            }
          });
        }
        $("#" + titleid).bind("mouseout", function(evt) {
          setInsideWindow(false);
        })
      }
    }

    function getByIndex(index) {
      for (var i in a_array) {
        if (a_array[i].index == index) {
          return a_array[i];
        }
      }
    }

    function manageSelection(obj) {
      var childid = getPostID("postChildID");
      if (!ddList) {
        $("#" + childid + " a.selected").removeClass("selected");
      }
      var selectedA = $("#" + childid + " a.selected").attr("id");
      if (selectedA != undefined) {
        var oldIndex = (actionSettings.oldIndex == undefined || actionSettings.oldIndex == null) ? a_array[selectedA].index : actionSettings.oldIndex;
      }
      if (obj && !ddList) {
        $(obj).addClass("selected");
      }
      if (ddList) {
        var keyCode = actionSettings.currentKey;
        if ($("#" + elementid).attr("multiple") == true) {
          if (keyCode == 17) {
            //control
            actionSettings.oldIndex = a_array[$(obj).attr("id")].index;
            $(obj).toggleClass("selected");
            //multiple
          } else {
            if (keyCode == 16) {
              $("#" + childid + " a.selected").removeClass("selected");
              $(obj).addClass("selected");
              //shift
              var currentSelected = $(obj).attr("id");
              var currentIndex = a_array[currentSelected].index;
              for (var i = Math.min(oldIndex, currentIndex); i <= Math.max(oldIndex, currentIndex); i++) {
                $("#" + getByIndex(i).id).addClass("selected");
              }
            } else {
              $("#" + childid + " a.selected").removeClass("selected");
              $(obj).addClass("selected");
              actionSettings.oldIndex = a_array[$(obj).attr("id")].index;
            }
          }
        } else {
          $("#" + childid + " a.selected").removeClass("selected");
          $(obj).addClass("selected");
          actionSettings.oldIndex = a_array[$(obj).attr("id")].index;
        }
      }
    }

    function addNewEvents(id) {
      document.getElementById(id).refresh = function(e) {
        $("#" + this.id).dd(options);
      };
    }

    function setInsideWindow(val) {
      actionSettings.insideWindow = val;
    }

    function getInsideWindow() {
      return actionSettings.insideWindow;
    }

    function applyEvents() {
      var mainid = getPostID("postID");
      var actions_array = attributes.actions.split(",");
      for (var iCount = 0; iCount < actions_array.length; iCount++) {
        var action = actions_array[iCount];
        var actionFound = $("#" + elementid).attr(action);
        if (actionFound != undefined) {
          switch (action) {
            case "onfocus":
              $("#" + mainid).bind("mouseenter", function(event) {
                document.getElementById(elementid).focus();
              });
              break;
            case "onclick":
              $("#" + mainid).bind("click", function(event) {
                document.getElementById(elementid).onclick();
              });
              break;
            case "ondblclick":
              $("#" + mainid).bind("dblclick", function(event) {
                document.getElementById(elementid).ondblclick();
              });
              break;
            case "onmousedown":
              $("#" + mainid).bind("mousedown", function(event) {
                document.getElementById(elementid).onmousedown();
              });
              break;
            case "onmouseup":
              //has in closeMe method
              $("#" + mainid).bind("mouseup", function(event) {
                document.getElementById(elementid).onmouseup();
                //setValue();
              });
              break;
            case "onmouseover":
              $("#" + mainid).bind("mouseover", function(event) {
                document.getElementById(elementid).onmouseover();
              });
              break;
            case "onmousemove":
              $("#" + mainid).bind("mousemove", function(event) {
                document.getElementById(elementid).onmousemove();
              });
              break;
            case "onmouseout":
              $("#" + mainid).bind("mouseout", function(event) {
                document.getElementById(elementid).onmouseout();
              });
              break;
          }
        }
      }
    }

    function setOutOfVision() {
      var sId = getPostID("postElementHolder");
      $("#" + elementid).after("<div style='height:0px;overflow:hidden;position:absolute;' id='" + sId + "'></div>");
      $("#" + elementid).appendTo($("#" + sId));
    }

    function setTitleText(sText) {
      var titletextid = getPostID("postTitleTextID");
      $("#" + titletextid).html(sText);
    }

    function next() {
      alert("next()");
      var titletextid = getPostID("postTitleTextID");
      var childid = getPostID("postChildID");
      var allAs = $("#" + childid + " a.enabled");
      for (var current = 0; current < allAs.length; current++) {
        var currentA = allAs[current];
        var id = $(currentA).attr("id");
        if ($(currentA).hasClass("selected") && current < allAs.length - 1) {
          $("#" + childid + " a.selected").removeClass("selected");
          $(allAs[current + 1]).addClass("selected");
          //manageSelection(allAs[current+1]);
          var selectedA = $("#" + childid + " a.selected").attr("id");
          if (!ddList) {
            var sText = (options.showIcon == false) ? a_array[selectedA].text : a_array[selectedA].html;
            setTitleText(sText);
          }
          if (parseInt(($("#" + selectedA).position().top + $("#" + selectedA).height())) >= parseInt($("#" + childid).height())) {
            $("#" + childid).scrollTop(($("#" + childid).scrollTop()) + $("#" + selectedA).height() + $("#" + selectedA).height());
          }
          break;
        }
      }
    }

    function previous() {
      alert("previous()");
      var titletextid = getPostID("postTitleTextID");
      var childid = getPostID("postChildID");
      var allAs = $("#" + childid + " a.enabled");
      for (var current = 0; current < allAs.length; current++) {
        var currentA = allAs[current];
        var id = $(currentA).attr("id");
        if ($(currentA).hasClass("selected") && current != 0) {
          $("#" + childid + " a.selected").removeClass("selected");
          $(allAs[current - 1]).addClass("selected");
          //manageSelection(allAs[current-1]);
          var selectedA = $("#" + childid + " a.selected").attr("id");
          if (!ddList) {
            var sText = (options.showIcon == false) ? a_array[selectedA].text : a_array[selectedA].html;
            setTitleText(sText);
          }
          if (parseInt(($("#" + selectedA).position().top + $("#" + selectedA).height())) <= 0) {
            $("#" + childid).scrollTop(($("#" + childid).scrollTop() - $("#" + childid).height()) - $("#" + selectedA).height());
          }
          break;
        }
      }
    }

    function setValue() {
      var childid = getPostID("postChildID");
      var allSelected = $("#" + childid + " a.selected");
      if (allSelected.length == 1) {
        var sText = $("#" + childid + " a.selected").text();
        var selectedA = $("#" + childid + " a.selected").attr("id");
        if (selectedA != undefined) {
          var sValue = a_array[selectedA].value;
          document.getElementById(elementid).selectedIndex = a_array[selectedA].index;
        }
      } else {
        if (allSelected.length > 1) {
          var alls = $("#" + elementid + " > option:selected").removeAttr("selected");
          for (var i = 0; i < allSelected.length; i++) {
            var selectedA = $(allSelected[i]).attr("id");
            var index = a_array[selectedA].index;
            document.getElementById(elementid).options[index].selected = "selected";
          }
        }
      }
    }

    var optionElementOffsetTopArray = undefined;

    function openMe() {
      var childid = getPostID("postChildID");
      if (oldDiv != "" && childid != oldDiv) {
        $("#" + oldDiv).slideUp("fast");
        $("#" + oldDiv).css({zIndex:'0'});
      }
      if ($("#" + childid).css("display") == "none") {
        if (a_array[$("#" + childid + " a.selected").attr("id")]) {
          selectedValue = a_array[$("#" + childid + " a.selected").attr("id")].text;
        }
        $(document).bind("keydown", function(event) {

          var keyCode = event.keyCode;
          if (keyCode == 39 || keyCode == 40) {
            //move to next
            event.preventDefault();
            event.stopPropagation();
            next();
          }

          if (keyCode == 37 || keyCode == 38) {
            event.preventDefault();
            event.stopPropagation();
            //move to previous
            previous();
          }
          if (keyCode == 27 || keyCode == 13) {
            closeMe();
            setValue();
          }
          if ($("#" + elementid).attr("onkeydown") != undefined) {
            document.getElementById(elementid).onkeydown();
          }
        });
        $(document).bind("keyup", function(event) {
          if ($("#" + elementid).attr("onkeyup") != undefined) {
            //$("#"+elementid).keyup();
            document.getElementById(elementid).onkeyup();
          }
        });

        $(document).bind("mouseup", function(evt) {
          if (getInsideWindow() === false) {
            closeMe();
          }
        });

        $("#" + childid).css({zIndex:options.zIndex});
        $("#" + childid).slideDown(30, function() {
          if (optionElementOffsetTopArray === undefined) {
            optionElementOffsetTopArray = new Array();
            $(this).children().each(function() {
              var id = $(this).attr("id");
              if (id) optionElementOffsetTopArray[id] = $(this).offset().top;
            });
          }
          scrollToSelectedOption(childid);
        });
        if (childid != oldDiv) {
          oldDiv = childid;
        }
      }
    }

    /**
     * Scrolls msdropdown menu to selected destination.
     */

    function scrollToSelectedOption(id) {
      var optionsDiv = $("#" + id);
      if (optionsDiv) {
        var optionsDivOffsetTop = optionsDiv.offset().top;
        var selectedOption = optionsDiv.find(".selected");
        if (selectedOption) {
          var selectedElementOffsetTop = optionElementOffsetTopArray[selectedOption.attr("id")];
          var scroll = selectedElementOffsetTop - optionsDivOffsetTop;
          optionsDiv.animate({scrollTop: scroll}, 100);
        }
      }
    }

    function closeMe() {
      var childid = getPostID("postChildID");
      $(document).unbind("keydown");
      $(document).unbind("keyup");
      $(document).unbind("mouseup");
      $("#" + childid).slideUp(30, function(event) {
        checkMethodAndApply();
        $("#" + childid).css({zIndex:'0'});
      });

    }

    function checkMethodAndApply() {
      var childid = getPostID("postChildID");
      if ($("#" + elementid).attr("onchange") != undefined) {
        var currentSelectedValue = a_array[$("#" + childid + " a.selected").attr("id")].text;
        if (selectedValue != currentSelectedValue) {
          document.getElementById(elementid).onchange();
        }
      }
      if ($("#" + elementid).attr("onmouseup") != undefined) {
        document.getElementById(elementid).onmouseup();
      }
      if ($("#" + elementid).attr("onblur") != undefined) {
        $(document).bind("mouseup", function(evt) {
          $("#" + elementid).focus();
          $("#" + elementid)[0].blur();
          setValue();
          $(document).unbind("mouseup");
        });
      }
    }

    function hightlightArrow(ison) {
      var arrowid = getPostID("postArrowID");
      if (ison == 1) {
        $("#" + arrowid).css({backgroundPosition:'0 100%'});
      } else {
        $("#" + arrowid).css({backgroundPosition:'0 0'});
      }
    }
  };

  $.fn.msDropDown = function(properties) {
    var dds = $(this);
    for (var iCount = 0; iCount < dds.length; iCount++) {
      var id = $(dds[iCount]).attr("id");
      if (id) {
        if (properties === undefined) {
          $("#" + id).dd();
        } else {
          $("#" + id).dd(properties);
        }
      }
    }
  };
})($);